Cohesion-machine.



. .SEEM.

COHESION MACHINE.

APPLICATION FILED IAII.2. I918.

Patented Apr. 15, 1919.

2 SHEETSSHEET Witnesses 1 mm"; warns co.. r-H'omumo. wasnmcmlv. 5..

W. P. SEEM.

COHESION MACHINE.

APPLICATION FILED JAN.2. 1918. 1,300,494. Patented Apr. 15,1919.

2 SHEE TSSHEET 2.

Attorneys NITE V STATES PAT Fro WARREN r. SEEM, 0E ALTOON'A, PENNSYLVANIA,

COHESION-MACHINE.

To all whom it may concern:

Be itknown thatI, WARREN SE M, a citizenof the United' States,"res1d1n at Altoona, in the'county of'iBlair and tate oft Pennsylvania, haveinvente'd a'new'and 11sen11: Cohesion-Machine, of which the follow- 7 ingfis aspecifioation; 7

By way 7 of explanation it may "be stated that the quality. of a'silkthreaddepends uponthe strengthwith which its constituent fibers adhere together and" resist an attempt to separate them transversely. This'property has been denominated cohesion by Adolph Rosenzweig of Milan, and itS'iIIiportanc'e in determining the quality of a silk' thread' is recognized; Them'ethod' of testing resorted to commonly is to separate the fibers 0f the thread betw'een thethumb and "forefinger; noting such results as this crude procedure" may] make" manifest, the personal equation rendering? the thumb and" 1 forefinger test, at best, no more than a means for arriving? at approximate results hesi'veness, -but, i-a1so,- frequently contains minute particles of foreign "matter;such as sandor limestone, which roughensthe.

se'ricin to' such an extent that conclusiv'e results as to cohesion cannotbe attained by a m'ere friction test.

In view of the"foregoing, it is theoloject' of this invention to" provide a simple but efiicient machine whereby cohesion testsorr silk' threadsmay 'becarriedout readily; and. j Where'bythe results *of the tests will-"be of such a conclusive and uniform nature that they maybe-compared, thereby-producing a 1 standard for cohesion tests.

' With the above and other objects in view. whichwill appear as thedes'cripti'on procoeds, the invention-resides in the combination and arrangement of parts and 1n the details of construction hereinafterdescribed t and claimed, it' being understood that 16;c0nst1tut1ng-a part of thethread carr1er,'

" is secured tothe-shaft 15 for swingin movechanges in the precise embodiment "of "the inventionhereindisclosed can be madewith V Figure "1 'she'ws *in"side-elevation; a ma Specification of Letters Patent. .Patented Ap g.15, 1919.; Applicationfi1e 1'January2,1918. serial No. 210,102. 3

chine embodying one formof "thepresent invention; I

' Fig; 2 is a top plan of the more important parts of the structure, the thread carrier being swung backwardly, so that the lower face thereof is shown;

Fig. 3-is alongitudinal section disclosing the parts delineated in Fig. 2; the line 1n 1g. 2 denoting the cutting plane inwhlch F1g.'3 is taken;

Fig." 4 is across section taken approximately', on the line4-4 of Fig.- 1; and

Fig. -5 is a cross section taken approximately on the line 55 of Fig. 2, a portion of {the supporting table appearing as an addeddetail. r

In carrying'out theinvention there is pro-" vided a base 1 which'may be in the form ofa'plate provided adjacent one end with a 1ong1tud1na1 slot 2. Guides 3 are secured to'the base 1 onopposite sides of'the slot 2. fit-carriage 4 is mounted to reciprocate on the base'l andis held thereto for right'line movement-bymeans, of the guides '3. 0 positely disposed standards 5 and 6 are erected upon the carriage 4. A bearing screw '7 is threaded in the standard 5, a hearing screw-'8 being threaded in the standard 6. The standard 6 is divided at "its'upper Apres'sure member is embodied in the in- 8. The bearing'screw"8"may be advanced and retracted, so as to vary the pressure exerted on the roller 11, and, consequently, to regulate' and adjustthe freedom with which the roller rotates, as will be made manifest "hereinafter. The binding screw 10 may be manipulated to, cause" the jaws 9- of thestandard 10-to grip the bearing screw 8,"andin this waythe bearing screw may be held 1n any position so far as its binding efl'ecfion the shaft 11 is concerned.

Standards 14 are secured to the" base 1' near to-the rear end thereof 'and in the standardsashaft 15 is mounted to rock. An arm I end to form'compress'ible'jaws 9 adjustably' connectedby-m'eansof a binding'screw" 10.

mentin'averticalplane. A rest 1 --'-is atweight 18 isattached'tothefree end of the arm 16 and may be held in place by a securing element 19 engaged with one end of a clip 20, of arched form, located below the arm 16 when the latter is in the working position shown in Fig. 1. A screw 21, threaded into the arm 16, engages the clip 20 and regulates the pressure with which the inner end of the clip coacts with the arm 16. The numeral 22 denotes a clip, similar to the clip 20, and controlled by a screw 24 threaded into the arm 16, the outer end of ployed if desired. The numeral 27 denotes a thread holder which, together with the 1 arm 16, forms a thread carrier. The thread holder 27 may be in the form of a flexible or resilient card, about which silk threads 28 are wound in any desired number of convolutions, a fixed number preferably being determined upon, and this number being retained in all tests for the sake of uniformity; The threads 28 are spaced from each other and are held in spaced relation by pasting them with adhesive strips, at their ends, to the card or holder 27. After the threads 28 have been mounted on the holder 27 in the manner above alluded to, the holder is, placed against the working side of the arm 16 and is retained by the clips 20 and 22,

' the screws 21 and 24 being tightened up so as to compress the clips firmly on the holder and to prevent the holder from shifting.

. In practical operation, the arm 16 is swung over from the position of Fig. 3 to the position of Fig. 1, the threads 28 then resting on the roller 11. The carriage 4 is reciprocate d between the guides 3, the roller 11, turning in contact with the threads 28, and the threads being pressed against the roller by the action of the weight 18. At each stroke of the carriage 4, the counter 25 is actuated by means of the lever 26 which coacts with the roller 11. d

In order to take readings, the arm 16 is raised and swung back into theposition of Fig. 3, the arm being supported on the rest 17. The holder 27 is removed from the clips 20'and 22 and is flexed slightly so as to slacken the threads 28, the threadsbeing raised by vmeans of a spatula or like tool. The threads are examined preferably at the end of every fifty strokes made by the carstroke, by the action of the roller 11. The I riage 4, the number of strokes being read off the counter 25. These examinations are continued until all of the threads have been opened throughout the full length of the total number of strokes is read off the counter 25 and this forms the unit of cohe- 'sion, the process consisting, essentially, in

subjecting a fixed number of threads, under a fixed pressure, to a suiii'ciently great number of strokes to produce an opening of all of'the threads. The roller 11 preferably is inclined at an angle of about 2% degrees to the horizontal so as to approximate the re-' sult produced when a silk thread is rubbed between the forefinger and thumb of the human hand. This inclination of the roller 11 is indicated in Fig. 4. 7

Any desired means may be provided for imparting a reciprocating movement to the carriage 4. An efiicient means is shown inthe drawings for reciprocating the carriage, but I do not bind myself in this respect. As disclosed, the base 1 is attached to a table 24 carried by side frames30 between which a footboard 31 extends. An upright 32 connects the footboard 31 with the table 29. An electric motor 32 is mounted on the board .31 and is controlled by a foot switch 33, the motor including a pulley 34 around which is trained a belt 35 engaged with a wheel 36 journaled on the upright 32. A pinion37 rotates with the wheelv36 and meshes into a gear wheel .38 supported for rotation on the upright 32. A pitman 39 is pivoted to the gear wheel'38 and is I pivoted to one end of a rock arm 40, the other end of which is secured to a shaft 41 journaled in bearings 42 carried by the side frames 30. An upstanding arm 43 is. at-Y tached to the shaft 41, the parts 43, 41 and 40 constituting in effect, a bell crank. One

end of a link 44 is pivoted to the arm 43, the

other end of the link being pivoted to a depending projection 45 attached to the c'ar-- riage 4 and movable in the slot 2 of the. base 1 and in a registering :slot 46 fash ioned in. the table 29. I 1

When the motor 32 is operated, the pin ion 37 isdriven by means of. the wheel 36, the belt 35 and the pulley 34. The pinion 37 rotates the gear wheel 38, theshaft 41 is rocked by means of the pitman 39 and the arm 40, a reciprocating movement being imparted to the carriage 4, through the instrumentality of the arm 43 on the shaft 41, the

link 44, and the riage. v

Having thus described the inventiomwhat is claimed is:

projection 45 on-the car- LA machine for determining the cohesion of silk threads, comprising a; thread carrler; a pressure member adapted to roll.

in contact with the threadon the carrier and. pressing the thread against the carrier,

means for mounting the pressure member for rotation and means for. producing relative translatory movement between the p s I sure member and the carrier.

2. .A machine for determining the cohe- V sion of silk threads, comprising a thread carrier; a pressure member cotiperating with the carrier; means for mounting the pressure member for rotation; and means for producing relative movement between the pressure member and the carrier.

3. A machine for determining the cohesion of silk threads, comprising a thread carrier; a carriage mounted to reciprocate with respect to the thread carrier; a roller journaled on the carriage and cooperating with the thread carrier; and means for moving the carriage with respect to the thread carrier.

4. A machine for determining the cohesion of silk threads, comprising a base; an arm pivoted to the base; thread holding means carried by the arm; -a carriage mounted to reciprocate on the base; a roller journaled on the carriage and coacting with the arm; and means for reciprocating the carriage.

5. A machine for determining the cohesion of silk threads, comprising a base; an arm pivoted to the base; a carriage mounted to reciprocate on the base; means for reciprocating the carriage; a roller journaled on the carriage and coacting with the arm; and a counter carried by the arm; the counter comprising a part extended into the path of the roller.

6. A machine for determining the cohesion of silk threads, comprising a base; an arm pivoted to the base; thread holding means carried by the arm; a pressure member mounted to reciprocate on the base and Copies of this patent may be obtained for coacting with the arm; means for reciproeating the pressure member; and a counter on the arm, the counter comprising a part extended into the path of the pressure member.

7. A machine for determining the cohesion of silk threads, comprising a base; an arm pivoted at one end to the base; a weight on the other end of the arm; a carriage mounted to reciprocate on the base; a roller journaled on the carriage and coacting with the arm; thread holding means carried by the arm and disposed on opposite sides of the roller; and a counter mounted on the arm and including a part extended into the path of the roller.

8. A machine for determining the cohesion of silk threads, comprising a support; a carriage mounted to reciprocate on the support; a roller journaled on the carriage; a thread carrier pivoted to the support and resting on the roller; a motor on the support and under the control of an operator; and means for connecting the motor with the carriage to secure a reciprocation of the latter.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

S. R. SMoUsE, J. J. HAUSER.

five cents each, by addressing the "commissioner of Patents, Washington, D. 0." 

